Dish-washing machine.



R. CARY & G. W. HEWITT.

DISH WASHING MACHINE.

APPLICATION FILED MAR. I2. I9I4.

Patented Nov. 28, 1916.

2 SHEETS-SHEET 1.

INVENT Elfii ATTEJHNEY:

R. CARY & G. W. HEWITT.

DISH WASHING MACHINE. APPLICATION FILED IIIAR. I2. I914.

1 06,206. I Patented Nov. 28, 1916.

2 SHEETS-SHEET 2- WITNEEEIEB INVENTEIFKS W% @azfim ATTIjHNEYL-I.

' UNITED, STATES PATENT OFFICE.

nrcnmn our AND enonen w. rinwrrr, or mam rams, mew YQBKI DISH-WASHING MACHINE.

Speciflcatiomof Letters Patent.

Application filcd Karena, 191a Serial No. 824,178.

To all whom it may concern:

Be it known that we, RICHARD GARY and GEORGE W. Huwrrr, citizens of the Umted States, residing at Niagara Falls, in the county of Niagara and State of New York,

have invented new and useful Improvements in Dish-Washing Machines, of which the following is a specification. 0

This invention relates to a machine for washing dishes and the like and more par ticularly to a machine of this character n the dishes 1s which the water for washing circulated by power.

'ect of It is the ob this invention to provide a machine of this character which simple, durable and inexpensive in construc;

tion, which can be easily and conveniently operated with a minimum expenditure of power, which is'provided wrth means for supporting the dishes so that thorough cleaning of the same is always 'msured and the parts can be readily dismembered for thoroughly cleaning the machine and easily assembled for putting the machine 1n working condition.

In the accompanying drawings: Flgure 1 is a vertical section of the machine embodying our invention taken lengthwise of the axis of the pump and its motor and the discharge spout of the tank. Fig. 2 is a vertical section taken at right angles to Fig. 1 and substantially on line 22 of said figure. Fig. 3 is a fragmentary vertical transverse section of the machine taken in line 3-3, Fig. 4. Figs. 4 and 5 are horizontal sections taken in the corres ondingly numbered lines in Fig. 1. Fig. 6 1s a detached perspective view of the supporting means for oneof the rack sections.

Similar characters of reference indicate corresponding parts throughout the several views.

The tank, reservoir or chamber of the machine which is adapted to receive the dishesat their upper ends to the body of the tank and provided at their lower ends with roll ers 5 adapted to rest on the floor and a horizontal cross piece 6 connecting the legs below the tank.

The bottom of the tank is preferably con-" structed so that it slopes toward the center thereof and for convenience in em tying the tank' a. gutter 7 is formed in t e bottom thereof which gutter extends from the centralpart to the periphery of the bottom and opens into a valved spout or discharge spent 40 of any suitable and well known construction As shown in Figs. 1, 4 andv 5 the closure for this spout consists of a vertically swinging gate 8'pivoted on the spout to move across the'outer end thereof. When this gate is closed the washing water is confined within the tank but when this gate is opened the water and any material which has been removed from the dishes during the washing operation is permitted to flow from the tank through the gutterand spout into a receptacle or elsewhere.

In its general organization this machine is designed so that the dishes and other articles to be cleaned are stacked in the upper and lower parts of the tank and a water circulating device is provided which takes the water from an outlet in the bottom of the tank and returns the same in the form of a spray from the central part of the tank in all directions toward the side wall or body thereof so that all the dishes stacked within the tank are exposed to the washing effect of the spray of water. After the water strikes the dishes and again drops toward the bottom of the tank it is again taken up and sprayed over the dishes, this operation con tinuing until the dishes have been subjected to the washing action of the spray of water a sufiicient length of time to thoroughly clean the same.

Although the water may be thus circulated and delivered into the tank in the form of a spray by various means those shown Patented" Nov. 28. T916.

in the. drawings are suitable and are constructed as follows: i

9 represents an upright water dehvery or spray pipe or column arranged centrally within the tank and provided with a plurality of spray openings 10 through which the water delivered under pressure into theinterior of the spray pipe or column is delivered laterally or radially in all directions from the spray pipe into the tank and toward the wall thereof. This spray pipe may be supported by any suitable means, for instance, by screwing its lower end Into the upper end of a coupling nipple 11 which latter projects with its lower reduced part through an opening formed in the central part of the tank bottom and forms a downwardly facing shoulder 12 on this nipple which engages with the upper slde of the bottom and is secured thereto by brazing, soldering or any other suitable means.

13 represents a water return spout which preferably opens at its upper end into the lower part of the tank at the lnner end of the gutter although, if desired, this return spout may be otherwise located.

14 represents the casing of a centrifugal pump which is arranged below the bottom of the tank and has its eye provided with an inlet pipe 15 which is detachably connected by a union 16 with the return spout 13 while the tangential outlet 17 of the pump casing is connected by means of a union 18 with the lower end of the coupling nipple 11 of the spray pipe. Thispump is preferably arranged with its axis horizontal and mounted upon a platform or table 19 which is detachably mounted upon the cross piece of the carriage. During the operation of this pump the water is withdrawn from the lower part of the tank through the return spout into the pump casing and discharged from the outlet of the latter into the spray pipe so that the water issues from the latter in the form of a spray and strikes the dishes which have been stacked within the tank.

The pump may be 0 erated by any suitable means, either manual yor by power, but for convenience and simplicity of construction as well as economy it is preferable to employ for this purpose an electric motor 20 which is mounted upon the platform 19 below the tank and operatively connected with the shaft of the pump, as shown in Figs. 1 and 2.

For convenience in introducing soap or other detergent or cleaning agent into the water for the purpose of producing suds or other cleaning effect which will promote the Washing of the dishes, means are provided for supplying a semi-liquid or paste soap within the perforated spray pipe or column so'that the-water becomes thoroughly mixed with this cleaning agent before issuing from the spray pipe and striking the dishes. The

preferred means for this purpose which are shown in Figs. 1, 2 and 3 consist of a cup 21 mounted on the upper end of the spray pipe and provided in its bottom wlth an outlet opening 22 leading from the interior of this cup to the interior of the spray pipe, and a cap or cover 41 adjustably connected with the upper end of the on by a screw joint as shown in ig. 1 or by any other suitab e means. The interiors of this cup and cover are filled with soap paste and upon screwing the cover downwardly upon the cup some of the soap is squeezed out of the outlet opening 22 in the bottom thereof into the spray pipe where it is mixed with the water delivered into the spray pipe by the pump and caused to become thoroughly mixed with this water and form suds which operate to effectively clean the dishes or other articles as the water issuing from the spray pipe strikes the same.

The means for stacking or supporting the dishes within the tank so that they receive the washing effect of the spray most advantageously preferably comprises a lower rack which is mounted in the lower part of the chamber and adapted to support the large dishes, and an upper rack arranged in the upper part of the tank and adapted to receive the silverware and glassware, such as drinking glasses. The lower rack, as shown in Figs. 1, 2 and 5, is preferably constructed of wire so as to form a plurality of annular grooves or seats 23, 24, 25, 26 arranged concentrically around the water delivery pipe. The two annular seats 23, 24 nearest the center of the rack are lowest and on the same level while the intermediate annular seat 25 is arranged at somewhat higher level than the lower seats and the outermost annular seat 26 is arranged at a still higher level than the intermediate seat 25. Each of these annular seats has its outer wall 27 arranged vertically or nearly so while the inner wall 28 thereof is inclined at an angle toward the center of the tank and the spray pipe. Owing to this construction of these seats of the lower rack any dishes which are placed in these seats are t'pped inwardly at their upper ends, as shown by the representation of these dishes in dotted lines in Figs. 1 and 2, and it is therefore practically impossible to stack the dishes on thisrack in any other than an inwardly inclined position. By this means the spray of water from the delivery pipe is caused to strike all of the dishes on the lower rack at an" angle which causes the water spray to be deflected downwardly and remove all the material from the dishes in a comparatively short time and without necessitating any particular care in placing the dishes on the lower rack exce t that it is desirable to have the soiled si es of the dishes facing the spray. Furthermore, this construction of these seats insures quick and complete draining of the water from the preferably dishes. This lower rack rests loosely upon the bottom of the tank and. may be readily removed when a thorough cleaning of the interior of the tank and other parts is required.

.The upper rack, which is also preferably constructed of wire, is arranged in the upper part of the tank and is preferably constructed in the form of two sections or baskets each of which is of substantially segmental or semi-circular form and comprises an inner curved wall 29, an outer curved wall 30, transverse walls 31 connecting the ends of the inner and outer walls respectively and a bottom 32 connecting the lower edges of said walls and sloping from the outer wall downwardly toward the inner wall. These two sections of the 11 per rack are arranged on opposite sides 0 the spray pipe within the upper part of the tank and supporting silverware and drinking glasses or the like which are placed upon the bottom of each rack section so that they are arranged substantially radial and with their open ends facing inwardly so that the spray of water lssumg from the spray'pipe w1ll strike the interior of the glasses as well as the exterior thereof and thoroughly cleanse the same. Thesetwo rack sections may be removably supported within the tank in va-.

rious ways but preferably by means whereby they are removably mounted on the upper end of the spray pipe. The preferred means for this purpose which are shown in the drawings comprise a which engages removably over the cover of the soap cup, and two horizontal-supportrods 34 which are secured side by side to the top of the supporting cap by soldering or otherwise so of these rods project beyond opposite sides of the supporting cap, and laterally projecting hooks 35 arranged at opposite ends of each supporting rod, the hooks of each rod beingadapted to .removably engage the adjacent transverse walls of one of the upper rack sections.

In order to sustain each of the upper rack sections in its proper operative position a brace is provided extending from this section to the spray pipe. In its preferred form this brace'comprises two arms 42 having their u per ends connected with the upper edges oi the transverse walls of an upper rack section on diametrically opposite sides of the same and a curved cross bar 43 connecting the lower ends of the arms 42 and engaging removably with the adjacent outer side of the spray pipe below the underside of this rack section. The brace arms preferably bear with their upper parts against the adjacent transverse walls of the respective upper rack section so that when the" spray of water to proper are adapted more particularly forsupporting cap 33 that the opposite ends.

pipe the respective upper rack section will be held in its proper position on the hooks 35 relatively to the spray ipe to permit the y enter the open ends of the glassware supported upon the upper rack section and thoroughly clean the same. 7

During the operation of the machine an effective spray of water is delivered by the pipe 9 against the dishes and silverware contained within the upper and lower racks so that they are thoroughly cleaned in a comparatively short time and after being thus cleaned'the soiled water may be conveniently removed from the tank through the drain spout 40 and fresh hot water thrown over the dishes so that they will become dry without the necessity of wiping them for this purpose. i If desired, the dishes after being washed may be removed from the tank with the racks in which they are supported and other dishes which have been previously stacked in extra racks may be introduced into the tank, thereby permitting the machine to be used continuously and increasing the capacity of the same where this is desired.

Any water contained in the casing of the pump may be removed therefrom through a drain pipe 37 connectedwith the lower part of the pump casingand having a drain cook 38.

This machine contains no complicated or delicate parts which are liable to get out of order duringordina'ry use, the same can be produced at comparatively low cost and it operates to clean dishes efiectively, quickly and economically. l i

We claim as our invention:

1. A dish washing mach' e comprising a washing chamber, an-upright Water delivery pipe arranged within said chamber, and means ,for supporting articles to be washed comprising a rack arranged within the chamber, and a cross bar mounted on the upper end'of said delivery pipe and proper end of said delivery pipe and provided at its opposite ends with hooks adapted to engage with the adjacent parts of said rack and a brace extending from saidrack to the water delivery-pipe below the rack.

3. A dish washing machine comprising a washing chamber, an upright water delivery pipe arranged within said chamber, and

means for supporting articles to be washed comprising a rack arranged within the the adjacent parts of said chamber, and a cross bar mounted on the uparms and engaging with the side of said 10 per end of said delivery pipe and provided water delivery pipe below said rack.

at its opposite ends with hooks adapted to Witness our hands this 11th day of March, engage with the adjacent parts of sad rack 1914.

and a brace comprising two arms having RICHARD CARY.

their upper ends connected with the upper GEORGE W HEWITT.

part of said rack and their upper parts en- Witnesses: gaging with the inner wall of said rack and MARTBIN M. Hum, a cross bar connecting the lower ends of said D. L. Donm'crs. 

